We're dividing 721353 by 85 
The aim is to understand the frequency of 85 in 721353.

Step 1:
85 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 85

On to step 2:
85 goes into 72 0 times with a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Bring next digit (1) of the dividend behind the 72 and repeat the process: 721 / 85

Going ahead to step 3:
721 divided by 85 is 8 with a remainder of 41.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 41 after subtracting 680 from 721.
Fetch the next digit (3) from the dividend, attach it to 41 and continue: 413 / 85

Going ahead to step 4:
When dividing 413 by 85, we get 4 with a remainder of 73.
Use 4 as the next digit of our solution. 
Result so far: 84.0
If we subtract 340 from 413, we get 73.
Grab the next digit (5) from the dividend, add it to 73, then carry on: 735 / 85

Going ahead to step 5:
The number 85 fits into 735 8 times, leaving a remainder of 55.
Record the quotient 8 as the next digit in the result. 
Result so far: 848.0
Subtracting 680 from 735 leaves us with 55.
Grab the next digit (3) from the dividend, add it to 55, then carry on: 553 / 85

Step 6:
The number 85 fits into 553 6 times, leaving a remainder of 43.
The next digit of our result is 6. 
Result so far: 8486.0
Subtract 510 from 553 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 7:
If we divide 430 by 85, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 8486.5
The remainder is 5 after subtracting 425 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
When dividing 50 by 85, we get 0 with a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 8486.5
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
85 can be fit into 500 5 times, resulting in a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 8486.505
The remainder is 75 after subtracting 425 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 10:
When dividing 750 by 85, we get 8 with a remainder of 70.
Write down 8 as next digit of the result. 
Result so far: 8486.5058
Deduct 680 from 750 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 11:
If we divide 700 by 85, we get 8 and a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 8486.50588
Subtracting 680 from 700 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 8486.50588, with a leftover of 2e-05.